制备了掺铈硼酸盐、硅酸盐、磷酸盐和锗酸盐等玻璃样品,测试了激发光谱和发射光谱,结果表明,随着玻璃光碱度的增大,即从磷酸盐到锗酸盐,Ce3+的激发峰值波长从290nm到380nm,发射峰值波长从349nm到480nm,表现出强烈的Nephelauxetic效应,Stokes位移从50nm到100nm.较长的激发波长和发射波长有利于闪烁光在玻璃中的透过.较大的Stokes位移可以减少发射光的自吸收.作为玻璃闪烁体的基质,建议硼硅酸盐、硅酸盐和锗酸盐玻璃是比较合适的,本文为研制高密度玻璃闪烁体打下基础.
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